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Darwin, C. R. in correspondent 
Oliver, Daniel in correspondent 
1870-1879::1871::11::15 in date 
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From:
Charles Robert Darwin
To:
Daniel Oliver
Date:
15 Nov 1871
Source of text:
DAR 261.10: 64 (EH 88206047)
Summary:

Is it now thought that the spongioles of rootlets secrete carbonic acid which acts on bones and rocks?

Contributor:
Darwin Correspondence Project